Filler mechanism for tubes and the like



July 19, 1932.

F. J. STOKES FILLER MECHANISM FOR TUBES AND THE LIKE www- Filed June 9. 1928 2 Sheets-Sheet l 2 Sheets-Sheet 2 July 19, 1932. F. J. STOKES FILLER MECHANISM FOR TUBES AND THE LIKE Filed June 9. 1928 Patented July 19, 1932 UNITED. STATES FRANCIS .LsroKEs, or PHILADELPHIA;:PENIiTSYLVANIA.a

FILLER MECHANISM non; TnBEs ANYDVTHHE Linn Application filed June a, 1928. Serial No. -284,186.'

The present invention relates to mechanism by which measured quantities of a more or less fluid substance or material are introduced under pressure into tubes or other containers. i

The principal objects of the present invention is to provide a comparatively simple, reliable and eficient mechanism for machines for accomplishing that object.

Generally stated, the invention comprises filling means such as a pump a filling nozzle to which said means feed and from which material is delivered in measured quantities to tubes or containers, a cutofi for the nozzle, means for periodically working the cut ofi, and a by-pass for the feeding means operative to relieve pressure when the cutofi is closed.

The invention also comprises the improvements to be presently described and finally claimed.

In the following description reference will be made to the accompanying drawings.

Fig. 1 is a view principally in central section.

Fig. 3 is a side elevation at right angles to Fig. 2 with parts in cross section. I

In the drawings 1 is a nozzle adapted to deliver more or less fiuid material to tubes or other containers. 2 is a cut off for the nozzle and it is opened and closed periodically as by means of the oscillatingv arm 3. Arm 3 may be caused to oscillate or reciprocate by a cam orin any other desired way. 4 is a by-pass andit is provided with a normally closed valve 5 adapted "to be opened by pressure applied to it in opposition to the action of the spring 6 which tends to close it. The tension of spring 6 may be adjusted by the nut in which valve 5 is guided.

The feeding means chosen for illustration happen to be a reciprocating pump 7 which receives its supply from the hopper 8 through a rotary plug valve 9 which is turned on the instroke of the pump to permit of the passage of materialfrom the hopper 8 through the port 10 to the pump 7 and on the outstroke to permit of the passage of means for operating pump 7 and valve 9.

Fig. 2 is a side elevation of my device, and. lThese 'means are shown-.as consisting of "a 1 It willthus l l causes crank diskf15 and withit pin 18 material the through port 11 to the passage12 andthence tothenozzle I 1. This is the position shown in the drawings and in it the pump chamber communicates through the. port 10 with the by-pass twhich 5, also communicates with: the hopper 8.. The

feedingmeans as stated happen to be areciprocating pump which involves the use of the movable'plug valve. In the-case of a continuously acting pump it will be understood that the provision ofthe described ports com- .mi nicating with the emission side of .the

pump and with the nozzle landwith the bypass is sufiicient provided of c oursethat the by-p'ass communicates with thehopperon in- 1 take sideiof the pump.

In use thecutofi .2 opens'thenozzlerl for intervals of time ap ropriate for delivering the requiredtquantity of the substanceor material and then closes-it. When-the cuts ,ofi. is closed excess pressure is relievedby the openingof thevalve .the! flow of the material through the by -pass 4L,-

j r 'In Figs. 2 and 3; there is illustrate'd the frame 13 which supports the entiremachine. In'this frame there is mounted a shaft 14 .adapted to be driven vfrom any suitable .source of power. On the inner end of shaft 1 8,0 l lthere is .mounted a crankdisk 15 which bears a screw adjustment 16 thereon. Screw adjustment 16 carries at its upper end a crank block 17 which carries in itsinner end a crankppinLlS. Crankpin 18' cooperates withacross head 19 which is detachably but tightlysecured torod'g20 in any suitable man er as by. screw 21.1, Rod 2Qcarriesat its upper endpiston 77 of pump 7. r

There is also mountedon shaft 14: a valve: 0

to valve 9.

be seenthat rotation of shaft to rotate. This causes pin 18 to reciprocate in a groove in cross head 19 and simultaneously to cause vertical reciprocation of cross head 19 and rod 20, thereby actuating pump 7.

Rotation of shaft 14 also causes cam 23 to rotate which causes vertical movement of follower 24 in groove 23. This actuates valve 9 through arm 25, link 28 and arm 30.

It will be obvious to those skilled in th art to which the invention relates that modifications may be madein details of construction and arrangement and matters of mere form without departing from the spirit of the invention which is not limited to such matters or otherwise-than-the prior art and the appended claim may-require.

' I claim:

'1. A filing machine for tubes or the like including in combination a feeding hopper for material to be fed,'afeeding nozzle for introducing the material to the tube to be filled, a cut off for said nozzle, means inde pendent of the tube to be filled for opening and closing said out ofi, a: pump for conveying the material to be fed from said hopper to said nozzle, a mechanically actuated valve alternately opening connection between said hopper and said pump or between said pump and said nozzle, and a bypass between said valve and said hopper for. returningexcess material to said hopper, said valve intermittently opening an unobstructed connection between said pump and said by-pass;

2. A filling machine for tubes or the like including in combination a feeding hopper for material to be fed, a feeding nozzle for introducing the material to the tube to be filled, a cut ofl for said nozzle, means independent of the tube tobe filled for opening and closing said out 01f, a pump'for conveying-the material to be fed from said hopper to said nozzle, a mechanically actuated valve alternately opening connection between said hopper and said pump or between said pump and said nozzle, a by-pass between said valve and said hopper for returning excess material to said hopper, a valve in said bypass, means urging said valve in said bypass to closed position against the'flowof mahopper and to said nozzle and to said pump, a rotary valve seated in said casing and having orifices therein and mechanically actuated to alternately open connection between said hopper and said pump or between said pump and said nozzle, a by-pass in said casing connected to said hopper, and a valve in said by-pass stressed to closed position against pressure towards said hopper, said orifices in said valve opening unobstructed connection between said pump and said bypass when said pumpis in communication with said nozzle.

FRANCIS J. STOKES.

terial from said pump to said hopper, and

means for-adjusting the tension of said last mentioned means, said valve intermittently opening an unobstructed connection between said pump and said by-pass. 7 r

- 3. filling machine for tubes or the like including in combination a feeding hopper for material to be fed, a feeding nozzle for introducing the material to the tube to be filled, a cut off for said nozzle, means independent of the tubeto be filled for opening and closing said cut off, a pump for conveying the material to be fed from said hopper to said nozzle, a valve casing having separate ports connected respectively to said 

